Question
In a company, 60% of the number of girls is equal to two -
third of the total number of boys. When 40 new girls joined the company, then 25% of the number of girls became one - third of the number of boys. Before joining the new girl, what was the total strength (boys and girls) of the company?Solution
In the company, let the number of girls be g and the number of boys be b
Then, 60% of g = 2b/3
3g/5 = 2b/3
9g = 10b
b/g = 9/10
Let b be 9a, then g = 10a
After going 40 new girls, 25% of (10a + 40) = 1*9a/3 = 3a
3a - 2.5a = 10
0.5a = 10
a = 20
Before joining the new girls, the strength of the company = 9a + 10a = 19a = 380
Profit percentage received on a product when sold for Rs.550 is equal to the percentage loss incurred when the same product is sold for Rs.380. Find the...
Cost of 4 pens, 6 note books and 9 files is Rs 305. Cost of 3 pens, 4 notebooks and 2 files is Rs 145. What is the cost (in Rs) of 5 pens, 8 notebooks ...
The marked price and cost price of an article are in the ratio of 8:3, respectively. The seller sold the article after giving a discount of 45% on the m...
An item is sold for a profit of 20%. If the cost to purchase the item had been reduced by 20%, and it was subsequently sold at a 25% loss, the seller wo...
A sells an article to B at a profit of 20% and B sells it to C at a profit of 20%. If C pays ₹504 for it, what was the cost price for A?
A bought a laptop for Rs.25000. He spent 16% of the amount that he had paid for buying it for its repair. He then sold the laptop to B and earned a prof...
A shopkeeper sold an article at the profit of 15% and also while weighing used a weight of 920 gms. in place of 1 kg. Find out his actual total profit%?
A shopkeeper bought article ‘A’ for Rs. ‘x’ and marked it 20% above its cost price and sold it for Rs. 3000. Marked price of article ‘B’ is ...
A bag of cost price of Rs. 9000 is marked up by a certain percentage, and a discount percent of twice the markup percent is offered on it. If there is a...
An electronic item is listed at Rs. 6000. After two successive discounts, the final price paid is Rs. 4080. If the first discount is 15%, what is the pe...
